Superstar Shah Rukh Khan is upset to know that the entire music album of his upcoming movie "RA.One" has been leaked online

He has urged the people to respect the hard work of the film's makers and not download the music illegally.

"How sad it is that someone somewhere has no regard for our labour of love. 5 yrs of work and they put it on net so callously. Extremely sad..., " Shah Rukh posted on micro-blogging site Twitter.

The audio release of "RA.One" is slated for Sep 12 and just two days before the release, the entire thing has been leaked online.

Vishal Dadlani of music director duo Vishal-Shkehar, who has also given music to the movie, tweeted: "Show your support for 'RA.One' and SRK. Don't download illegally."

To which the director Anubhav Sinha added, "Appeal. Everyone who has an illegal 'RA.One' track, DELETE IT."

"RA.One", a superhero film, is coming out Oct 26.